Shore.



R. BLANKENSHIP".

. SHORE.

APPLICATION FILED MAR. 1. 1911..

Patented Apr. 30, 1918.

a: l .1 1 JBLANKENSHIP, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIG'NOR FONE-HALF TO ALLAN A. IRVINE, OF WASHINGTON, DISTRICT OF COLUMBIA.

SHORE.

meager.

To all whom it may concern. I

Be it known that I, Rrcrmrn BLANKEN-.

sure, a citizen of the United States residing at Washington, in theDistrict of (lolumbia,

have invented certain new and useful Improvements in Shores, of whichthe following is aspecification.

My inventionrelates to improvements in shores for concrete constructionwork and the objects thereof are to provide a device of this characterwhich is adjustable in the direction of itslength, as well as in a planeat right angles to its axial center; to provide nove means for clampingthe work; and to provide means for preventing clogging of the clampingmeans. v

To the accomplishment of the recited. objects, and others subordinatethereto, the preferred embodiment of my invention resldes in thatconstructionand arrangement hereinafter described, illustrated in theaccom panying drawings, and embraced w thin the sco e of the appendedclaims. a

id drawings: 1

Fre 1 is a longitudinal'sectional elevationdofthe shore, in positionsupporting a mo] Referring specifically to thedra'wings', 1- designatesa tubular member with a swiveled base 2, and a rigidly carried boss 3 atits I vided for the reception of any convenientv upper end engageablewith the screw 4. At a point adjacent the base an opening 5 is retool,by means of which the tubular element may be rotated'to cause the screwtobe vahll true vertical plane. After the shore has thus' ried orlowered. The upper end ofthe'screw is bifurcated to form a yoked whichis se-' cured to the bolt 7 passing transversely through the follower 8.In this manner the t9 the mold when it is impossible or'impractrcalbleto position the tubular element in a been initially ositioned, itbecomes necessary to maintain the follower in place. In the present.instance, the a Fig. 2 is a longitudinal section of the fol-' which Ivedevised to accomplish the stated comprises a flat sector 9- with itsends 10 in the form of a yoke ri 'dly fixed to opposite extremities ofthe fol ower. by bolts 11; the sector passing through a slot 12 in theupper end of screw, and being engageable by the set-screw 13 to hold thefollower in any desired set position.

The follower per se consists of a pair of identical blocks 14; and 15,suitably spaced at opposite extremities by the sleeves 16 of the bolts11. A shaft 17 is disposed in this space, and rotatably supported "bythe bush mg 18. Equal portions of the shaft upon. opposite sides of thebushing arereversely nated at 1 9 while'the left-hand threads are shownat'20. Upon each set of threads is a purpose,

Specification of Letters Patent. v Patented, App 3%, jllll, Applicationflled'lltarch 1, 1917. Serial 11o. 151,840.

threaded, right-hand threads being 'desig taneously move toward or awayfrom the j work.

' An important advantage in connection with the construction of thefollower as just described, is that the space between the blocks It and15 not only accommodates the shaft 17 but serves mold, and which wouldotherwise have a tendency to clog the threads of the shaft, If desired,a. ring, as 23, with a lateral as an outlet for any small partlcles ofconcrete which leak from the angular extension 24:, may be mounted-uponthe tubular member 1, and serve. as a su port for scafiolding, as 25theadjustability of the rin being secured by the appropriate manipu ationof the set-screw 26. I

- Thepresent practice with regard to aim crete construction work is toemploy shores which are made very crudely of wood and of dimensionsexactly suitable to the work at hand. It follows that when theparticular construction work requires'shores of slightly difl'erentdimensions, the original shores had to be altered to suit the newconditions. Such alterations require considerable time and areexpensive,v Furthermore, wood is not durable, and whether or not theshores have to be ehangedfrom time to time, they necessarily have to berepaired, and frequently discardeoh This constitutes anether item ofexpense."

My improved type" of shore is designed I to be practicallyindestructible and will last 1:! ill! llll lll I IS H113 only cost. Itmay be adjusted to any reasonable degree in a vertical plane, and byreason of the swiveled base and the pivotal follower, it may bepositioned over a well hole, shaft, or the like. The clamp whichconstitutes a component art of the follower mbraces the mold t1ghtlyandentirely eliminates the use of nails. Still further, the com lete shoreis compact and comparative y light, and may be easily and quicklytransported from place to place.

What is claimed, is

1. A. shore-comprising a base, a tubular member adjustably mountedthereon, a screw extensibly carried by said tubular =member, a yokeformed on said screw, a

pivot bolt carried by said yoke, a follower carried by said pivot bolt,comprising supporting blocks and adjustable clamps, and a-sector carriedby said follower having adjustably locked engagement with said screw.

2. A shore comprising a base, a tubular member movably carried thereby,a screw extensibly carried by said tubular member, a yoke formed on saidscrew, a pivot bolt carried by said yoke, a follower pivotally carriedby said pivot bolt, said follower comprising spaced supporting blocks,clamps, slidably carried by said supporting block, a screw rotatablycarried by said supporting block for actuating said clamps, a sectorcarried by said follower having engagement with first mentioned screw,and locking means carried by first mentioned screw to establish a fixedrelationship between said first. mentioned screw and said follower.

3. A shore comprising a base, having a socket formed therein, a tubularmember having a rounded lower end movably carried by said base, aninternally threaded boss, carried by said sleeve, a screw extensiblycarried by said boss, a yoke formed on the outer end of said screw, apivot bolt carried by said yoke, a follower pivotally mounted on saidpivot bolt,'said follower comprising base supporting blocks, havingguides formed thereon, clamps slidable on said supporting blocks, anoperating screw for said clamps carried by said follower and means forretaining a fixed relationship between said follower and said firstmentioned screw.

In testimony whereof I aflix my signature.

RICHARD BLANKENSIHP.

